114 PROCEEDINGS OF THE CALIFOENIA 



I was doubtful at first whether to consider this fish a Pteroplatea, as that 

 genus is described by Richardson as having the mouth curved, and the dental 

 plate extending to its corners, also the teeth lobed. These characters, how- 

 ever, may change with its growth, this being evidently a young specimen. Mr. 

 Gill, of the Smithsonian Institution, Washington, D. C, to whom I sent a 

 figure of it, agrees with me in referring it to this genus. 



Compared with the P. Madura (Lesueur), of the Atlantic coast, described and 

 figured by Dekay in the Nat. History of New York, this species is less wide 

 in proportion to its length, the difference being as 10 to 16. There is also 

 some difference in the markings. The P. Madura is said to attain the enor- 

 mous width of 18 feet. 



I found but one specimen of this fish at San Diego, where it was caught in 

 a seine. I have also seen one, when the steamer was lying at anchor, at San 

 Pedro, swimming near the surface of the water, apparently supporting itself by 

 flapping its wing-like expansions, while it progressed slowly by lateral motions 

 of its tail. 



Note. — By an oversight of the printer, the proper references to the figures 

 on page 110 were left out. The reader will however understand from the 

 descriptions that the right hand figure is the Myxodes (Fig. 23), and the others 

 the Gillkhthys (Fig. 24). 



Regular Meeting, January 18th, 1864. 

 President in the Chair. 



Present twelve members, four visitors. 



Donations to the Cabinet : Cone of Pinus pinea from the south 

 of Europe, by Mr. Grosseillier. Bottle of Scorpions and other 

 insects, by Mr. Dawson. Jar of fruits, and cloth made by the 

 natives of Hilukukaki Island, by Capt. J. B. Edwards: A jar of 

 alcoholic specimens from Rio Janeiro, one from Panama, and one 

 from Acapulco, by S. Hubbard. A specimen of Phasma from 

 Manzanillo, Mex., by Col. Heintzelman. A specimen of Crordius 

 from this vicinity, by Mr. Keith. A box of cretaceous and tertiary 

 fossils from the Atlantic States, by the Smithsonian Institution. 



Donations to the Library : 



Correspondenzblatt des Naturforschenden Vereins zu Riga, 13ter 

 Jahrgang; Riga 1863. Verhandlungen der K. K. zoologisch- 

 botanischen Gesellschaft in Wien, Band XII, Heft 1, 2, 3, 4, 

 Wien 1862. Personen-Orts-und Sach-Register der Sitzungs- 

 berichte und Abhandlungen der Wiener K. K., Zool. bot. Gesel- 



